Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
8th September 2021
- 1Concentration, Yield and Atom Economy
Give the formula for atom economy.
- 2Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 3Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 4Electrolysis
Aqueous copper sulfate solution is electrolysed using inert graphite electrodes. State the products formed at (a) the cathode and (b) the anode, giving a reason for each.
- 5Energy Changes
Give one everyday example of an endothermic process.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of September 2021, including the monthly compilation PDF.